Elevator.



G. DEVOS.

ELEVATOR.

APPLIOATION FILED SEPT. s, 1907. 925,462.

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2 SHEETS-SHEET 1.

Inventor. 8,26 00 6 Patented June 22, 1909.

G. DEVOS.

ELEVATOR. APPLIUATION FILED SEPT.6, 1907.

Patented June 22, 1909.

2 SHEETS-SHEET 2.

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- sides with ears 3, which bear on the side faces UNITED s ATEs PATENT,oEEroE.

CHARLES DEVOS, OF EAST ST. LOUIS, ILLINOIS.

ELEVATOR.

To all whom it may concern:

; Patented June 22, 1909.

jranged transversely thereon, between the Be it known that I, CHARLESDnvos, a citi-- j plates 4, is a timber 8; and arranged-for verzen ofthe United States, and resident of East St. Louis, Illinois, haveinvented certain new and useful Improvements in Elevators, of

which the following is a specification contain-,

ing a full, clear, and exact description, reference being had to theaccompanying drawings, forming a part thereof.

My invention relates generally to improvements in elevators, and moreparticularly to a safety device for elevators, which device isautomatically thrown into action whenever the hoisting cables of theelevator break, thereby instantly stoppin the elevator cage andpreventing accidents rile to the dropping of a cage to the bottom of theshaft.

To the above pur oses, my invention consists incertain nove features ofconstruction and arrangement of parts, which will be hereinafter morefully set forth, ointed out inthe claim, and illustrated in t eaccompanying drawings, in which c Figure 1 is a front elevation of anelevator cage equipped with my improved safety device; Fig. 2 is a planview of an elevator cage constructed in accordance with m invention;Fig. 3 is a side elevation of t e upper portion of the cage, and showingthe gripping devices of the safety device; Fig. 4 is an enlargedtransverse section taken on the line 4-4 of Fig. 2; Fig. 5 is anenlarged transverse section taken on the line 5-5 of Fig. 2.

Referring by numerals to the accompanymg drawings :1 designates theupright timbars or guides which are arran ed on opposite sides of theshaft or hatoiway, which guides are preferably constructed of wood andarranged for operation between said guidesis the elevator cage 2,provided on its ofthe guides 1 while the elevator is in operat'ion.

of, are plates 4, in which are formed'the alined pairs of journalbearings 5, and arranged in said bearings are the parallel rock shafts6, the ends of '-which project beyond the sides of the elevator cage 2,adjacent the guides 1, and fixed on said 'proj ecting ends by,

means of set screws and projpctinig downwardly therefrom are wedge s apeadjust- 1 able and removable gripping members 7, the lower ends of whichare pointed and provided with teeth 7.

Fixed to thetop of the cage Q and arj Fixed on top of the cage, at thesides there-o tlcal movement through theopening in the center of saidtimber is the lower portion of a vertically disposed bar 9, on the owerend" bles 12. site sides of the upper are the upper ends of lin 13, thelower ends of which are pivotally connected to the outer ends of arms14, the inner ends of which are rigidly fixed in any suitable manner tothe central ortions of the rock shafts 6.

Fixe in each shaft, adjacent the plates 4,

are the outwardly pro eating arms 15, and fixed on top of the tim er 8are leaf springs 16, the free outer ends of which are bent '75 downwardand bear immediately upon the.

outer ends of the arms 15. j While the elevator is in use, the bar 9 is'maintained at its up er limit of movement y reason of the weight of thecage suspended from the cables 12" relative the timber 8 which passaround the pulleys 11, andby reason of the connecting links and arms 13and 14, the rock shafts 6 are held in such po-- sitions as that thelower ends ,of the gripfping members are held away from the side of theguides 1; and, while so held, the arms 15 bear against the under. sideof the springs 16.

Should the hoisting cables 12 break, the

upper pull on the bar 9 is re1iev'ed,'and the gravity thereof, togetherwith the ressure of the ends of the springs-16 against the 1' arms 15causes said ar 9' to move down-- ward; and by reason of the connectinglinks 13 and arms 14, the shafts 6 are rotated in such a manner as tocause the pointed lower H ends of the grippingmembers 7 to engage the oposite si e faces of the upright uides 1;

an as soon as this action takes-place, the 0 cage 18 supported and heldagainst further downward movement.

A safety attachment for elevators constructedin accordance with theforegoing description is sim le, inexpens1ve,- oompr1ses 0 a minimum numer of parts, .and eanbe easily ap lied to all formsof elevators'or hosts ut izing cables, and thedevice is 'instantly and automaticallythrown into opera tion wherever the hoisting cable is broken. H

I claim v The combination with a pair of vertlcallydisposed guides andan elevator cage arranged for operation between said guides, of

' a timber transversely arranged on top of the elevator cage, bearingsfixed on top of the.

cage on opposite sides of the timber, a pair of rock shafts mounted insaid bearings, adjustabie gripping members mounted on the ends of the salts adjacent the side faces of the ings, fiat springs fixed to thetimber and bearing on the outer ends of said arms from above, a blockarranged for vertical movement through the center of the transversetimber and to which block the elevator cables are connected, linkspivotally connected to the block, and arms fixed to the shafts, theouter ends of which arms are pivotally connected to the lower ends ofthe links.

In testimony whereof, I have signed my name to this specification, inpresence of two subscribing witnesses.

CHARLES DEVOS. Witnesses M. P. SMITH, E. L. WALLACE.-

